Difference between house, progressive house, electro house, and tech house?

What is the difference between house, progressive house, electro house, and tech house?
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Progressive House:

link

link

link
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Electro House:

link

link

the second link has elements of progressive house
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link

I think this is more electro house than tech house.

What do you think?
Difference between house, progressive house, electro house, and tech house?
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